From b677c69faf9e2dd4adcc3039ff85752217e9c350 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Mon, 5 Dec 2016 17:59:23 +0800
Subject: [PATCH] rtio: fix handling of o_status in DMA

---
 artiq/gateware/rtio/dma.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/gateware/rtio/dma.py b/artiq/gateware/rtio/dma.py
index 7ca210bcb..fbff7005f 100644
--- a/artiq/gateware/rtio/dma.py
+++ b/artiq/gateware/rtio/dma.py
@@ -309,7 +309,7 @@ class CRIMaster(Module, AutoCSR):
         )
         fsm.act("CHECK_STATE",
             self.busy.eq(1),
-            If(~self.cri.o_status,
+            If(self.cri.o_status == 0,
                 self.sink.ack.eq(1),
                 NextState("IDLE")
             ),